153,593 species and infraspecific names are in the database, 20,980 images, 59,399 bibliographic items, 411,125 distributional records.

Carteria Diesing, 1866

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Viridiplantae
Infrakingdom Chlorophyta infrakingdom
Phylum Chlorophyta
Subphylum Chlorophytina
Class Chlorophyceae
Order Chlamydomonadales
Family Chlamydomonadaceae

Holotype species: Carteria cordiformis (H.J.Carter) Diesing

Currently accepted name for the type species: Tetraselmis cordiformis (H.J.Carter) F.Stein

Original publication and holotype designation: Diesing, K.M. (1866). Revision der Prothelminthen. Abtheilung: Mastigophoren. Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe. Abt. 1, Mineralogie, Botanik, Zoologie, Anatomie, Geologie und Paläontologie 52: 287-401.
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Taxonomic status: currently regarded as a synonym of Tetraselmis.

Most recent taxonomic treatment adopted: Massjuk, N.P. & Lilitska, G.G. (2011). Dunaliellales. In: Algae of Ukraine: diversity, nomenclature, taxonomy, ecology and geography. Volume 3: Chlorophyta. (Tsarenko, P.M., Wasser, S.P. & Nevo, E. Eds), pp. 152-157. Ruggell: A.R.A. Gantner Verlag K.-G..

Description: Unicellular thalli typically spherical to subspherical, range in diameter from 10-45 µm. Each cell typically with two or four anterior contractile vacuoles. Four anterior isokont flagella. Chloroplast single per cell and variable, variants species specific and provide basis for defining species groups (sensu Ettl). Chloroplasts cup-shaped (Eucarteria, Corbierea, Carteriopsis) to "H"-shaped (Pseudagloë) to indistinct (Sphaerella), or even highly dissected (e.g., C. zebra). Pyrenoids one to several with position variable depending upon the species basal (Eucarteria), lateral (Corbierea), or axial (Pseudagloë). Carteriopsis group may exhibit numerous pyrenoids. Eyespot prominent in most species (rarely absent), at cell anterior embedded in chloroplast. Nucleus single and typically central; < 5 µm. Flagellar root system highly complex. Two flagellar architecture types (Group I and Group II) defined by ultrastructural analysis (Lembi). The Group I taxa (C. sp. UTEX 762 and C. radiosa) are further characterized as possessing a small, rounded papillum. Group II taxa (C. eugametos [= C. lunzensis sensu Ettl], C. crucifera, C. olivieri) have a prominent cruciate papillum. Domozych and others (1981) and Domozych (1987) have described microtubule behavior during cytokinesis and papillum formation in C. crucifera. Phycoplast system of microtubules develops in the plane of cytokinesis. First division typically longitudinal, sometimes coupled with rotation (depending on the species). Asexual reproduction by zoosporogenesis. Two to four zoospores typically produced. Akinetes may form by thickening of vegetative cell wall. Palmella stages common. Sexual reproduction isogamous, anisogamous, or oogamous. Planozygotes bear four or eight flagella, remaining motile for extended periods of time.

Information kindly contributed by M. Buchheim & M.D. Guiry but may now be outdated.

Comments: Carteria species are widely distributed in freshwater and terrestrial habitats including soil, temporary pools and eutrophic lakes. Cell wall in C. eugametos and C. cruciferi of the type II lattice similar to Chlorogonium, Chloromonas, Polytoma, Brachiomonas and some species of Chlamydomonas . Carteria is a heterogeneous assemblage of quadriflagellate taxa with morphological and ultrastructural data suggesting distinct lineages. Molecular data also indicate that the genus is diverse, but, in addition, rRNA data suggest that Carteria is not a monophyletic taxon. Group I and II (sensu Lembi) taxa are allied in separate lineages. If the quadriflagellate condition is the only character defining the genus, yet is an ancestral feature, then the support for a monophyletic genus is problematic. Taxonomic revision appears likely and will dramatically alter the genus. Throndsen (1997: 665) includes Carteria in the Phylum Chromophyta.

Numbers of names and species: There are 118 species names in the database at present, as well as 11 infraspecific names. Of the species names, 63 have been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..

Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):

Click here to also show infraspecific names in the list below.

References
Throndsen, J. (1996). The planktonic marine flagellates. In: Identifying marine phytoplankton. (Tomas, C.R. Eds), pp. 591-730. San Diego: Academic Press.

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

Created: 11 April 2002 by M.D. Guiry

Verified by: 12 September 2014 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=43371

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 16 November 2018.

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